Organize barcode codes into modules.

Previously all the files in barcode are lumped together.
The naming of some files are inconsistent,
leading to difficult understanding of the structure.
Now files are grouped based on different barcode type like in zxing.
This also matches what it looks like in other xfa folders.
The file names in each folder could be further modified to be consistent.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/842043002

1 files changed, 198 insertions, 0 deletions

diff --git a/xfa/src/fxbarcode/datamatrix/BC_C40Encoder.cpp b/xfa/src/fxbarcode/datamatrix/BC_C40Encoder.cpp
new file mode 100644
index 0000000000..4c3b458afa
--- /dev/null
+++ b/xfa/src/fxbarcode/datamatrix/BC_C40Encoder.cpp
@@ -0,0 +1,198 @@
+// Copyright 2014 PDFium Authors. All rights reserved.

+// Use of this source code is governed by a BSD-style license that can be

+// found in the LICENSE file.

+

+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

+// Original code is licensed as follows:

+/*

+ * Copyright 2006-2007 Jeremias Maerki.

+ *

+ * Licensed under the Apache License, Version 2.0 (the "License");

+ * you may not use this file except in compliance with the License.

+ * You may obtain a copy of the License at

+ *

+ *      http://www.apache.org/licenses/LICENSE-2.0

+ *

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an "AS IS" BASIS,

+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+ * See the License for the specific language governing permissions and

+ * limitations under the License.

+ */

+

+#include "../barcode.h"

+#include "../BC_Dimension.h"

+#include "../common/BC_CommonBitMatrix.h"

+#include "BC_Encoder.h"

+#include "BC_SymbolShapeHint.h"

+#include "BC_SymbolInfo.h"

+#include "BC_EncoderContext.h"

+#include "BC_HighLevelEncoder.h"

+#include "BC_C40Encoder.h"

+CBC_C40Encoder::CBC_C40Encoder()

+{

+}

+CBC_C40Encoder::~CBC_C40Encoder()

+{

+}

+FX_INT32 CBC_C40Encoder::getEncodingMode()

+{

+    return C40_ENCODATION;

+}

+void CBC_C40Encoder::Encode(CBC_EncoderContext &context, FX_INT32 &e)

+{

+    CFX_WideString buffer;

+    while (context.hasMoreCharacters()) {

+        FX_WCHAR c = context.getCurrentChar();

+        context.m_pos++;

+        FX_INT32 lastCharSize = encodeChar(c, buffer, e);

+        if (e != BCExceptionNO) {

+            return;

+        }

+        FX_INT32 unwritten = (buffer.GetLength() / 3) * 2;

+        FX_INT32 curCodewordCount = context.getCodewordCount() + unwritten;

+        context.updateSymbolInfo(curCodewordCount, e);

+        if (e != BCExceptionNO) {

+            return;

+        }

+        FX_INT32 available = context.m_symbolInfo->m_dataCapacity - curCodewordCount;

+        if (!context.hasMoreCharacters()) {

+            CFX_WideString removed;

+            if ((buffer.GetLength() % 3) == 2) {

+                if (available < 2 || available > 2) {

+                    lastCharSize = backtrackOneCharacter(context, buffer, removed, lastCharSize, e);

+                    if (e != BCExceptionNO) {

+                        return;

+                    }

+                }

+            }

+            while ((buffer.GetLength() % 3) == 1

+                    && ((lastCharSize <= 3 && available != 1) || lastCharSize > 3)) {

+                lastCharSize = backtrackOneCharacter(context, buffer, removed, lastCharSize, e);

+                if (e != BCExceptionNO) {

+                    return;

+                }

+            }

+            break;

+        }

+        FX_INT32 count = buffer.GetLength();

+        if ((count % 3) == 0) {

+            FX_INT32 newMode = CBC_HighLevelEncoder::lookAheadTest(context.m_msg, context.m_pos, getEncodingMode());

+            if (newMode != getEncodingMode()) {

+                context.signalEncoderChange(newMode);

+                break;

+            }

+        }

+    }

+    handleEOD(context, buffer, e);

+}

+void CBC_C40Encoder::writeNextTriplet(CBC_EncoderContext &context, CFX_WideString &buffer)

+{

+    context.writeCodewords(encodeToCodewords(buffer, 0));

+    buffer.Delete(0, 3);

+}

+void CBC_C40Encoder::handleEOD(CBC_EncoderContext &context, CFX_WideString &buffer, FX_INT32 &e)

+{

+    FX_INT32 unwritten = (buffer.GetLength() / 3) * 2;

+    FX_INT32 rest = buffer.GetLength() % 3;

+    FX_INT32 curCodewordCount = context.getCodewordCount() + unwritten;

+    context.updateSymbolInfo(curCodewordCount, e);

+    if (e != BCExceptionNO) {

+        return;

+    }

+    FX_INT32 available = context.m_symbolInfo->m_dataCapacity - curCodewordCount;

+    if (rest == 2) {

+        buffer += (FX_WCHAR)'\0';

+        while (buffer.GetLength() >= 3) {

+            writeNextTriplet(context, buffer);

+        }

+        if (context.hasMoreCharacters()) {

+            context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH);

+        }

+    } else if (available == 1 && rest == 1) {

+        while (buffer.GetLength() >= 3) {

+            writeNextTriplet(context, buffer);

+        }

+        if (context.hasMoreCharacters()) {

+            context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH);

+        }

+        context.m_pos--;

+    } else if (rest == 0) {

+        while (buffer.GetLength() >= 3) {

+            writeNextTriplet(context, buffer);

+        }

+        if (available > 0 || context.hasMoreCharacters()) {

+            context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH);

+        }

+    } else {

+        e = BCExceptionIllegalStateUnexpectedCase;

+        return;

+    }

+    context.signalEncoderChange(ASCII_ENCODATION);

+}

+FX_INT32 CBC_C40Encoder::encodeChar(FX_WCHAR c, CFX_WideString &sb, FX_INT32 &e)

+{

+    if (c == ' ') {

+        sb += (FX_WCHAR)'\3';

+        return 1;

+    } else if ((c >= '0') && (c <= '9')) {

+        sb += (FX_WCHAR)(c - 48 + 4);

+        return 1;

+    } else if ((c >= 'A') && (c <= 'Z')) {

+        sb += (FX_WCHAR)(c - 65 + 14);

+        return 1;

+    } else if ((c >= '\0') && (c <= 0x1f)) {

+        sb += (FX_WCHAR)'\0';

+        sb += c;

+        return 2;

+    } else if ((c >= '!') && (c <= '/')) {

+        sb += (FX_WCHAR)'\1';

+        sb += (FX_WCHAR)(c - 33);

+        return 2;

+    } else if ((c >= ':') && (c <= '@')) {

+        sb += (FX_WCHAR)'\1';

+        sb += (FX_WCHAR)(c - 58 + 15);

+        return 2;

+    } else if ((c >= '[') && (c <= '_')) {

+        sb += (FX_WCHAR)'\1';

+        sb += (FX_WCHAR)(c - 91 + 22);

+        return 2;

+    } else if ((c >= 60) && (c <= 0x7f)) {

+        sb += (FX_WCHAR)'\2';

+        sb += (FX_WCHAR)(c - 96);

+        return 2;

+    } else if (c >= 80) {

+        sb += (FX_WCHAR)'\1';

+        sb += (FX_WCHAR)0x001e;

+        FX_INT32 len = 2;

+        len += encodeChar((c - 128), sb, e);

+        BC_EXCEPTION_CHECK_ReturnValue(e,  0);

+        return len;

+    } else {

+        e = BCExceptionIllegalArgument;

+        return 0;

+    }

+}

+FX_INT32 CBC_C40Encoder::backtrackOneCharacter(CBC_EncoderContext &context, CFX_WideString &buffer, CFX_WideString &removed, FX_INT32 lastCharSize, FX_INT32 &e)

+{

+    FX_INT32 count = buffer.GetLength();

+    buffer.Delete(count - lastCharSize, count);

+    context.m_pos--;

+    FX_WCHAR c = context.getCurrentChar();

+    lastCharSize = encodeChar(c, removed, e);

+    BC_EXCEPTION_CHECK_ReturnValue(e,  -1);

+    context.resetSymbolInfo();

+    return lastCharSize;

+}

+CFX_WideString CBC_C40Encoder::encodeToCodewords(CFX_WideString sb, FX_INT32 startPos)

+{

+    FX_WCHAR c1 = sb.GetAt(startPos);

+    FX_WCHAR c2 = sb.GetAt(startPos + 1);

+    FX_WCHAR c3 = sb.GetAt(startPos + 2);

+    FX_INT32 v = (1600 * c1) + (40 * c2) + c3 + 1;

+    FX_WCHAR cw1 = (FX_WCHAR) (v / 256);

+    FX_WCHAR cw2 = (FX_WCHAR) (v % 256);

+    CFX_WideString b1(cw1);

+    CFX_WideString b2(cw2);

+    return b1 + b2;

+}